Statistics of Vertical Shear from a Hemispheric Model
Technical note (Final)
NAVAL OCEAN RESEARCH AND DEVELOPMENT ACTIVITY STENNIS SPACE CENTER MS
Pagination or Media Count:
Using surface atmospheric momentum and heat fluxes derived from the Fleet Numerical Oceanography Centers weather prediction models, a computation of inertial and Ekman shear was done for the upper 400 m of the North Pacific and North Atlantic. Two 60-day periods were considered in November and December of 1976 and 1980. A capability to predict these types of shear in real-time, or near real-time, is demonstrated using the Navys TOPSThermodynamic Ocean Prediction System model, A statistical analysis of the vertical shear and associated Richardson number revealed that the time variability of shear appears to be linked primarily to the synoptic time scales of weather events and the spatial distribution of shear instability 0 or Ri or 0.25 and high shear are closely related to the position of atmospheric fronts.
- Physical and Dynamic Oceanography